newt: Update to version 0.52.23

newt: Update to version 0.52.23

- Update from version 0.52.21 to 0.52.23
- Update of rootfile
- Changelog
0.52.23
	- fix automatic height of menu/list in whiptail (broken in 0.52.22)
	- fix automatic width of whiptail --yesno box
	- fix automatic width in whiptail with unicode characters
	- fix automatic width with whiptail --noitem and --notags options
	- fix spacing with longer tags in whiptail
	- avoid overlapping backtitle in whiptail with automatic height
0.52.22
	- fix crash in whiptail with new libpopt
	- switch from usleep to nanosleep (Rosen Penev)
	- fix libnewt.pc to enable static linking (Alexey Sheplyakov)
	- fix LDFLAGS order in snack linking (Sam James)
	- use CFLAGS when compiling snack
	- improve configure.ac (Thomas Kuehne)
	- install header and libnewt.pc with shared library (Michael Olbrich)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>